Retrospective Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. May 14, 2015; 21(18): 5622-5629
Published online May 14, 2015. doi: 10.3748/wjg.v21.i18.5622
Figure 4
Figure 4 Barium swallow. A: Dilated esophagus showing a retained column of barium and “bird’s beak”, suggestive of achalasia; B: Esophagogram one month after peroral endoscopic myotomy. Barium passed and was excreted quickly through the lower esophageal sphincter.